International Truck on Tuesday unveiled its new in-house designed and engineered powertrain – the first new International on-highway product since regulators approved Volkswagen subsidiary Traton Group's takeover of Navistar last July.
When Paccar debuted its 12-speed Eaton-engineered automated transmission in 2017 for its Kenworth and Peterbilt models, Navistar became the lone major North American truck OEM without a vertically integrated powertrain. That same year, then-Volkswagen Truck & Bus formally took a more than 16% ownership stake in Navistar, and following more than five years of development alongside commercial truck sibling brands Scania, MAN, Volkswagen Caminhões e Ônibus and RIO, the all-new International S13 Integrated Powertrain was born – “integration built on collaboration,” said Michael Grahe, Navistar executive vice president of operations.
Deploying a modular design approach that allows for wide customization, the S13 Integrated Powertrain consists of three distinct components: an engine, a transmission and an aftertreatment system – all designed and developed concurrently to ensure compatibility and integration between the systems.
The heart of the new powertrain is the 13-liter International S13 engine and its seven engine rating options, offering up to 515 horsepower and 1,850 lb-ft of torque.
“We see the future as predominantly a 13-liter market because it offers the best weight to power ratio,” Grahe said, adding International's 12.4-liter A26 engine will eventually be phased out.
Navistar expects that half of all its new vehicles sold by 2030 will be zero-emission before hitting 100% in 2040.